diff --git a/utop.spec b/utop.spec
index a8b4785..d4d7317 100644
--- a/utop.spec
+++ b/utop.spec
@@ -1,3 +1,6 @@
+# OCaml packages not built on i686 since OCaml 5 / Fedora 39.
+ExcludeArch: %{ix86}
+
 # The OCaml code is byte compiled, not native compiled, so there are no ELF
 # objects in the binary RPM.
 %global debug_package %{nil}